Closure for containers



VJune 18, 1929. A, PERNOT cLosURE FOR CONTAINERS Filed June 5. 1924 2 Sheets-Sheet 2 i aae@ /A/VEN T 0R Hm @1w/z@ @Mmmm Patented June 1,8, 1929.

HENRI ALEXANDRE PERNQT, 0F PARIS, FRANCE.

CLOSURE FOR CONTAINERS.

v.Application led June 3,1924, Serial No. 717,465, and in France June 9. 1923.

This invention relates to closures for conl tainers of conical shape.

llie object of this invention is to provide a closure for such containers Iat a lowl cost, and

one which is easily secured in position.

According to this invention. the closure consists of a metallic cap with a flat or dishcd top and with a Harige which is grooved around .its

circumference, forming a rib on the inside. Means are provided for tearing off portions of the flange for facilitating the Vremoval ofV the cap. p

Preferably the diameter of the cap is equal to or slightly greater than the external diameter of the containers-at itsrim, but the inside diameter of the rib is smaller than that of the container at its rim. f When the cap is placed on the top of the container'v it isprevented from passing into position, owing to the rib formed on the inside, the inner surface of which bears against the rim of the container. If, however, the can be-pressed down, the rib which has a cer tain amount of elasticity, momentarily gives way and passes over the rim immediately clamping itself tightly on to the neck of the container, where it acts as a retaining ring preventing the cap from being easily removed.

The groove may be substantially semi-circular or may comprise two substantially conical portions so arranged as to be V-shaped in cross section. Moreover the upper conical portion has preferably an angle at the apex larger than that of the lower portion.

Of course the groove formed by the two conical 4portions may be 'smooth' or inter- The wall of the flange of the cap may be' tail sectional views lof the container and its cap showing the cap removed and in closing position respectively. Figure 4 is an elevation of a modification. .Figures v5 and 6 are views in elevation and in secgion respectively of a further modification. F'gure 7 is an llevation of a modification of a c'ap after positioning. Figure 7a isa diametral section to la -As shown in Figure .3, after the cap has been i forced into position on to the neck/of the container, the rib 2, owing to its elasticity, grips tightly onto the neck of the container, preventing any upward movement of the cap.

yThe cap has formed on its ange one or more grooved or ribbed tabs or tongues 3, which when torn of lessens the grip of the rib on the neck of the container-,allowing the cap to bc easily removed by hand.

Referring to Figure 4, instead of the tab or tongue 3, a slit 4 is provided into which the end of some suitable'tool may be inserted for facilitating the removal of the cap.

The cap, instead of having a dished fop, may be flat and may rest upon a round plate ot' metal, cardboard or other material, which closes the container. l In this case the flange ofthe cap 1 need not be continuous or provided with the tabs or tongues, instead its two ends may overlap one another and be secured together by'means of a rivet 6 or other suitable arrangement as shown in Fig. 5. To remove the cap, it is sufficient to pull on the external end 7 of the ange, so as to disengagf` the rivet 6.

It` should be understood that any other means may be provided in place of those de scribed for permitting the removal of thc cap.

Moreover, the rib on the iiange of the cap may be of any other suitable shape, as, for instance, several conveniently spaced projections may be provided around its periphery.

Referring to Figures 7 to 9 the'rib 2 is conical, 2l x'being the upper portion and 2" the lower portion, the angle at the apex of 2? being smaller than the angle at the apex of 2a and the conical section 2a being correspondingly shorter than the section 2". vThe lower part 2c of the flange is cylindrical. The capis provided with an opening tab 3.

In Figure 9 thereis shown the effect of compressin the part 2 of the cap against the body o the container A. This step exerts a leverage, owing to the difference of )inclination of the parts 2al and 2b to further compress the rib 2 against the container and also causes the ypart 2c to assume conical form and to lie closely adjacent to the conical wallf of the container. In Figure 10 the rib 2 in place of being coni tinuous is interrupted by cylindrical circular portion 2d or the rib may comprise projecting portions of any desired shape.

In place of a tab 3 the cap may be provided with other opening means.

1. In combination with a container having a frusto-conical portion adjacent the opening therein, a closure for said opening, said clos' the lower portion axnd arranged at a greater angle with respect `to the vertical than the lower section, the difference in angularity of the two portions causing the substantially cylindrical portion to assume a conical form upon application of pressure to the rib incident tofthe application ofthe closure to a container.

2. A closire including a top member and a circumferentialsecuring flange, said securing liange including an inwardly projecting securing rib and a substantially cylindrical portion beneatl'rsaid rib, the upper portion v of said rib being arranged at'a greater angle with relation tothe vertical than the lower portion of said rib and mea-'ns wherebyl a portion of said flan e may be torn awayto facilitate removal 0I the cap.

In testimony whereof I have affixed my signature.

HENR ALEXANDRE PERNOT. 

